The files show the boundaries for:
- The 60 districts of the Oregon House and
- The 30 Oregon Senate districts.
An example of that merging capability is the map I created HERE of renter severe cost burdens for the 30 Senate districts in Oregon. (Data is the most recent available, published in December 2017 and covers 2012-2016).
Note: I found it surprising difficult to locate Oregon legislative district boundaries in GIS formats on State of Oregon websites.
I had to download .SHP files from the US Census and then convert those files with the free Shape Escape program to create formats that I could import into Google Fusion tables and then display on Google Maps.
This may partially explain why there is very little public data visible on the web at Oregon state legislative district levels.
A simple solution for the state would be a centralized posting of Google map compatible boundary files for all Oregon geographies. It's possible that it's out there but I could not find; let me know if you find a link.
Originally created and posted on the Oregon Housing Blog.